WBAL News has learned that Governor Martin O'Malley will make good on a promise to sign a marijuana decriminalization bill, and he will do it in a bill signing ceremony on Monday morning.

The bill is on a list of bills that the governor will sign that were approved in the legislative session that ended on Monday night.

The bill reduces the penalties for possessing less than 10-grams of marijuana from 90-days in jail to civil fines starting at $100.

The governor is also expected to sign a bill to expand medical marijuana.

He will also sign "Jake's Law" which imposes a one year jail term on any driver who is talking or texting on a handheld phone, who then causes an accident resulting in injury or death.

The governor will also sign a series of bills that were on his agenda this year to strengthen domestic violence laws.

Prosecutors Want O'Malley to Veto Marijuana Bill

Prosecutors across Maryland are sending a letter to Governor O'Malley urging him to veto the just adopted marijuana decriminalization bill.

Baltimore County State's Attorney Scott Shellenberger says the measure will make it harder for police to search stopped vehicles if they smell marijuana. There is language in the bill that allows those searches, but Shellenberger says that's not enough.

"Certainly I think a number of good lawyers are going to come in and object, and say you didn't have a right to search my client, because you didn't know they had more than 10-grams," Shellenberger told WBAL News.

"Under 10 grams in the statute it says it's a civil offense, and if it's a civil offense, police do not have a right to arrest."

Shellenberger believes the issue should be studied further.

Shellenberger serves on the board of the Maryland State's Attorneys Association, which has sent a letter to the governor, asking him to veto the bill.

On Monday, the last day of the legislative session, Governor O'Malley said that he would sign the bill, noting that police officers recently have not stopped suspects believed to be possessing small amounts of marijuana. He told WBAL News this week that the measure conforms to "practical justice" that is now in place in Maryland.

O'Malley says he continues to oppose legalizing marijuana. A bill to do that never made it out of committee this year.